3 years ago

what is the differents between the number of electrons in selenium and the number of electrons in aluminum ?

2 answers:

8 0

Answer:

The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

Ulleksa [173]3 years ago

4 0

I hope this can help ;)

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jenyasd209 [6]

Answer:

Explanation:

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IceJOKER [234]

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rodikova [14]

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3 years ago

A 500 ml of naoh aqueous solution was prepared by dissolving 10.0 grams of naoh pellets in di water using a 500 ml volumetric fl

Setler [38]

Answer is: molarity of solution is 0,5 mol/dm³.
m(NaOH) = 10,0 g.
V(NaOH) = 500 ml = 0,5 dm³.
c(NaOH) = ?
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3 years ago